Wrench.



A. J. WHETFIELD;

WRENCHf APPLXCATION man APR. 23. 1911.

Patented Mar; 5, 1918.

V nwi't'tdf James y J UN TED STATES PATENT OFFICE.

ARTHUR JAMES WI-lITFIELD, E BOSTON, MASSACHUSETTS, ASSIGNOR T0 TBIMONT MANUFACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF WRENCH.

To all whom it may concern:

Be it known that I, ARTHUR Jimmie WHIT- rmnmaz citizen of the United States, and resident of Boston, in the county of Sufi'olk 6 and State of Massachusetts, have invented an Improvement in renches, of which the follow ng description, in connection with thelaccom anying drawings, is a specification,-like etters on the drawings represent ringlike parts.

- My,present invention relates to wrenches such as shown in my prior Patent No. 1,181,690, issued June 20, 1916, and my object' 1s to improve, strengthen and perfect 16 the t pe of-wrench therein illustrated and, to simpl fyth'e process of manufacturing same. In..,ma'king wrenches .of the type men:

tioned especially in the. larger sizes of such wrenches where great. ,strams are brought,

prhe'rethe swinging frame carrying the mayg-ablesjawmemberiaof, steel, as explained 1n my',;said-.prior atent, a'difliculty has been found iuthat t e wings of the-steel frame 2fi-zwereapt to-tspring and also to crush down and eonsequently 1m airthebearing shoul,. e wings rested during; the Win I of theswin ing frame. hi1 lay in.

ders'la ainst which .mustnecessarily ve 'considera le sof-iorde'i to be free to havethe mova le aw part automatically seat upon-the work, and gripthesame inthe manner of a fstillson wrench, it hasbeen extremely difficult to .devise.means which would strengthen and i '85: correct this diflieulty and still provide for the. freedom of movement required. My invention is directed to correctin this diflicultyyand furthermore to provi e a simple efficient, inexpensive and very powerful strengthening construction. v

Other features of the invention, combinationof parts and novel details will be here inafter more full pointed out and claimed. Referring to t e drawings, illustrating a 'preferred embodiment of my lnvention,

Figure 1 is a side view of my improved wrench; V

Fig. 2 is a. front view; and

Fig. 3 is a fragmentary view; and i Fig. 4 is a detail of one of the reinforcing parts- Referring to the drawings, 1 indicates the usual handle portion of the wrench carryin a fixed jaw 2 at the upper end which, pre 5 erably, 1s removable and held in position on Specification of Letters Patent.

n ,:the wrench. parts, and particularly ing faces 21 and 22 as illustrated Patented Mar. 5, 1918.

Application filed April 23, 1917. Serial N p. 163,816.

the handle 1 by dovetailed connection con sisting in a depending central part 3 fittin in a recess iat the upper end of the wrenc and held by a rivet '5. The movable jaw member 6 is formed with a portion 7 to cooperate with the jaw 2 and with a lower portion 8 threaded to receive the adjusting. nut 9 and to extend through the swingingframe 10, which frame is pivoted at 11, to the handle 1. This. frame is of-usualacons struction and preferably an all steel frame as shown in my said rior patent. The wings' 12 and 13, of saidiframe extend-fore wardly at either side of the upperapart ofthe handle 1 andare in. positionto rest upon apair of lugs 14 and 15 respeetively,-.= which .lugs extend backwardly as shown-watt; 16, Figs. 1 and 3, to constitutes-a.maintain guides for the-lower part-8 of the tiawunmnm er 6. Between these lugs and: .extendingttfi improved features inthe present construe tion In prior constructions theSelugs-Were only of su flicient extent to provide a. 'shoul der for the bearing wing rtions 12i 1nd 213 thereon and" this resulted, because, of the necessity of the construction, freedom of eli' movement of the wrench parts, and unloracedwings, in breaking down, crushing: and" wearing or-.".- cvclin of the small shoulders and consequently t a forcing apart of: the; Wings 12 and 13, thus impairin ciency of the wrench. According y-I form the lugs 14 and 15 ofsubstantially doubled; thickness and also slightly bevel thecontac ;2 similarly beveling the correspondin' o tactin surfaces of the wings 12 an 4 desire so that a normal ressureoitfi lugs will force the free end of said together rather than to spread them apart. In the thicker portion of these lugs 14 anil 11o 15 I provide a recess as indicated at 23, Fig. 3, which recess is preferably circular in form and of sullicient diameter and size to receive a round steel disk 24, which extends u wardly a sufficient extent to overlap the wings 12 and 13 as indicated at 25, Fig. 1, this disk being preferably welded directly onto the lugs and the recess provided therefor.

As thus constructed, my improved wrench provides an economical construction which prevents'the'steel frame 10 frombreaking down the lugs during use, which provides a guide for same frames, and a reinforcing and strengthening for the lugs and yet permits full reedom of movement of the frame and jaw member of the wrench. The welding construction, furthermore, using strong steel disks as guides, and also strengthening the lugs to which said disks are welded, is an advantage of my present invention. Conseigiently my improved wrench obviates the di culties and weakness formerly experienced and prevents the steel frame 10 from crushing 'or wearing the In portion, which latter may be and usually are of softer metal, for economy, and guides and strengthens the wings of the frame, effectuallypreventing them from s'pringin apart, while stil permitting freedom 0 movement, in all directions and beating of the jaw member on the work. Furthermore, the process above described of recessing the lug members14 and 15, which are forged integrally with the handle 1, with the recesses 23 therein, and then appl ing the metal disks 24, referably o'fsteel, in recesses and we ding the same, enables a steel' strengthening and bearing member to be readily, easily, quickly and economically applied by a simple electrical welding, thus ,reinforcin both the lugs and the steel wings of t ejframe by a steel bearing mem- --ber, which will be mosteflicient in service.

Thesteel disks may" be punchings from a plate of proper thicknassand therefore are very inexpensive M inventionis further described and-defin in the form of clainis as follows 1. A wrench of the kind described having rtion, and apivoted ide rame a movab e aw member adjusts ly carried by said gui 0 frame, wings on the frame extending at each side of the jaw portion of the wrench, lugs on said jawportionvupon whichthe wiiiigsof said rams rest, and steel disk wel ed to said lugs and overlapping the said wings permitting freedom of movement of the frame while holdin said wings in normal 2. A w'renc of the kind descri having ajaw ortion, and a pivoted ide frame, a movable jaw member adjustab y carried by said guide frame, wings on the frame extending at each side of the jaw portion of 'tion.

on the handle the outer surfaces of said In 'aii d thap upon the stoc a movable jaw c rried a the yoke to coiiperate with the fixed jaw,'an i tending at each side of the jaw portion of the wrench, logs on said jaw portion, the bearing faces of said lugs for said wings be kind described, having ing inwardly beveled, and'guide members.

carried by said lu s and overlapping the wings at all times merit of the frame.

4. A wrench of the kind described, having a jaw portion, and a pivoted a movable jaw member adj ustab y carried by uring the tilting moveso uide frame,

said guide frame, wings on the frame 'ex-v tending at each side of the jaw portion of the wrench, lugs on said jaw portion, l e-- cesses in said lugs adapted to receive a steel disk secured therein, said disks being of suflicient diameter tooverlap the adjacent wing portions of the frame.

5. The process ofmanufacturing the fixed scribed, said wrench being ceive a tilting, frame carrying an adjustable jaw member, whichconsists in forming the fixed jaw portion with In of ter thickness than 0 metal of said on] each side 'jaw portion of a'wrench of the kind de-- adapted to retilting frame, beveling the frame contact ing surfaces of said lugs inwardl plying to said recesses met frame and welding said disks thereto;

6. A wrench includin a stock, a fixed jaw carried b chairs a ted 'ro'o to fill said recesses and to overlap the the at ,a yoke pivoted-"V inwardly sloping interengagingjmeans 08l'.-,- ried by the yoke and stock respectively for urging the sides of the yoke toward the stock oo-incident with'the outward pivotal mayo ment of. the yoke under leverage thereon.

7. A wi'ench including a stock, a fixed ji w carried by the stock, a yoke ivotcd upon the stock, a movable jaw carri wardly sloping shoulders carri H b stock and en agin the shoulders of for urging t e si es of the yoke towa the stock co-incident with the outward pivot,

by the oke toooiiperate with the fixed jaw, inward ysloping shoulders carried by the yoke and inthe the oke movement of the yoke under leverage sion thereon. 1'

8. A wrench including a stock, a fixbd jaw carried thereby, a yoke pivoted upon the stock and provided with guide wings embracing the stock, a movable j'mi carried' by the oke to cooperate with the fixed jaw,-

inward y beveled shoulders form on the free extremities offsaid wings, and inwardly beveled shouldersformed on the stock and engagingl the shoulders of said wings for urging t e wings toward the stock oo-incident with the outward pivotal movement of the yoke under leverage tension thereon.

9. A wrench including a stock, a fixed jaw carried thereby a yoke pivoted at one extremity upon the stock and provided at its opposite extremity with guide wings confrontin opposite sides of the stock, inwardlyveled shoulders formed on the free rear ed es of said wings, a.--"movable jaw carried y said yoke to cooperate with the fixed jaw outstanding osts formed on opposite sidesof the s toc and freely receivlng the inner extrenuty of the said movable jaw, and inwardly beveled shoulders formed 7 with the shoulders of the, wings movable to 20 gradually seat throughout their length beneaththe shoulders of the 'postfor urgin the wings toward the stock eo-inoident wit the outward ivotal movement of the yoke upon the stoc the said oke. In testimony whereof, I have'sign'ed my name to this specification, in the presenee of two subscribing witnesses.

ARTHUR JAMES witn s sz CHARLE8,G. ELY Wnmza' TrH.

under leverage tension upon 25 

